Where are mitochondria?

Like the small light that hangs off a key-ring, or the huge emergency torch that saves us in a blackout, each organ requires different amounts of energy.

Hence, high energy organs that do a lot of work, such as the brain, contain cells with 1,000s of mitochondria (like the many batteries in the large torch). The low energy organs might only contain a few mitochondria in their cells, such as the platelets in our blood (like the single battery in the small torch). The red blood cell is in fact the only cell in our body that requires no energy and hence has no mitochondria….its main purpose is simply to carry oxygen.

Since the high energy organs require so many mitochondria within their cells, they are usually the first to be affected in mitochondrial disease. These include the brain (using 20% of our total energy), nerves, muscles, eyes, ears, heart, bowels, liver, kidney and pancreas.